2to3.changelog

- Fix intermittent error at _test_997('trailer_errors') due to list(set([...])) will return elements in random order with Python 3. See [error_997.py:124]
- Add a switch to select re.ASCII so the tests run succesfully with Python 2.7
- Note: test_x12n_document.py fails intermittently at _test_997('trailer_errors')
- Fix test test_xmlwriter.py, test_xmlx12_simple.py file opening to accept writing strings into buffer
- Set re.ASCII for regexes: rec_ID_E, rec_ID_5, rec_ID_B
- Change ListType to use primitive type list() in error_html.py
- Change division operator from / to // in map_if.py
- Replace file() with open()
- Remove dependency on string module in map_if.py
- Revert changes on [2to3.diff]:
    - next iterator alias
    - wrapping dict iterators with list()
    - StringIO imports
- Apply 2to3 patch